was on the A14 today overtaking a car about 70ish...THEN i losted most of my power!!! the car feels like, one of leads or plugs has gone! it doesnt want pull away too well.BUT wen i lost the power the exhaust went loud too, plus wen i got out of the car, you smell and feel the heat from the exhaust!! this cant be a lead or a plug, can it??!! it sounds bad to me!! HELP PLS